A vessel is in the form of a hollow hemisphere mounted by a hollow cylinder the diameter of the hemisphere is 42 CM and the total height of The vessel is 30 cm find the inner surface area of the vessel please give the right answer ​

Answers 1

Answer:

1320 sq.cm

Explanation:

Diameter of the cylinder and hemisphere  = 42cm => radius = 21cm

Total height of the vessel = Height of hemisphere + height of cylinder = 30cm

Height of the cylinder = Total Height - Height of hemisphere = 30 - 21 = 9cm

Inner surface area of the vessel = Curved surface area of cylinder + curved surface area of the hemisphere

= 22/7*21(2h + 2r) = 22*3 (18 + 42)

= 66*60 = 1320 sq.cm

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